Results 41 to 50 of about 878,777 (290)
Large‐Area Flat Optics Color Routing in Tilted Arrays of 2D Semiconductor Nanostripes
Advanced Optical Materials, EarlyView.We develop a scalable flat optics platform exploiting self‐organised ion‐beam sputtering and maskless glancing‐angle deposition to fabricate centimetre‐scale arrays of tilted MoS2 nanostripes. The engineered geometry activates Rayleigh anomalies, guided modes, and Mie resonances, enabling highly directional color routing and enhanced light harvesting ...
Simone Di Marco +7 more
wiley +1 more source
, 2008 Precise bit-error-ratio (BER) analysis of an asynchronous QPSK-modulated direct-sequence code-division multiple-access system using random quaternary spreading sequences for transmission over Rayleigh channels is performed based on the characteristic ...
Liu, X, Hanzo, L
core +1 more source
Performance of Quadrature OFDM System in Rayleigh Fading Channels
Journal of Engineering and Sustainable Development, 2011 This paper uses the Divide-and-Conquer DFT/IDFT computation approach instead of direct computation approach in OFDM system introducing a proposed system called Quadrature OFDM (Q-OFDM).
Hikmat N. Abdullah, Ali Abd Radhi
doaj
Advanced Optical Materials, EarlyView.Here we use a template‐assisted self‐assembly approach of metal colloids onto metal films to produce hybrid plasmonic metasurfaces that integrate nanoparticle‐on‐mirror cavities with periodic metal colloid arrays. The resulting coupling between gap plasmons and grating‐coupled surface plasmon polaritons enables programmable hybrid modes with tailored ...
Afroditi Koutsogianni +6 more
wiley +1 more source
Effective capacity of a correlated Rayleigh fading channel [PDF]
Wireless Communications and Mobile Computing, 2011 AbstractThe next generation wireless networks call for quality of service (QoS) support. The effective capacity (EC) proposed by Wu and Negi provides a powerful tool for the design of QoS provisioning mechanisms. In their previous work, Wu and Negi derived a formula for effective capacity of a Rayleigh fading channel with arbitrary Doppler spectrum ...
Qing Wang 0004 +2 more
openaire +1 more source
Visible‐Blind Near‐Infrared Organic Vision Sensors for Imaging in Adverse Environmental Conditions
Advanced Optical Materials, EarlyView.This work presents high‐performance visible‐blind NIR OPDs enabled by a multilayer optical modulation layer. The devices achieve strong visible‐light suppression and enhanced NIR sensitivity, enabling robust imaging in foggy or low‐light environments.
Baozhong Deng +9 more
wiley +1 more source
, 2002 In this contribution we propose a novel Space-Time Coding (STC) scheme for transmissions over dispersive Rayleigh fading channels, which invokes a Joint-Detection assisted Minimum Mean Square Error based Decision Feedback Equalizer (JD-MMSE-DFE)for ...
Ng, S.X. +4 more
core +1 more source
General Switch-and-Stay Combing for Space Diversity over Rayleigh Fading Channels
International Journal of Antennas and Propagation, 2012 Three multibranch switch-and-stay combining (MSSC) schemes are analyzed for Rayleigh fading channels, where different decision statistics for antenna switching (i.e., switch statistic) are used.
Yawgeng A. Chau, Yao-Hua Chen
doaj +1 more source
High‐Stress Si3N4 Reflective Membranes Monolithically Integrated With Cavity Bragg Mirrors
Advanced Optical Materials, EarlyView.Silicon nitride membranes are record‐breaking mechanical sensors, yet their delicate fabrication and alignment into precision optical cavities have confined them to the laboratory. A monolithic process directly integrates suspended high‐stress Si3N4${\rm Si}_{3}{\rm N}_4$ membranes onto Bragg mirrors, forming self‐aligned optomechanical cavities in ...
Megha Khokhar +3 more
wiley +1 more source
RAYLEIGH FADING - SHADOWING OF OUTDOOR CHANNELS ANALYSIS BASED ON SNR-PDF MODEL
Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2019 The outdoor transmission channels condition in multiple wireless signals systems changes continuously due to signals transfer path characteristics. The path loss, multiple reflected rays Rayleigh fading and shadowing presents an important factor that ...
Ashwaq Q. Hameed
doaj +1 more source